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The following commit(s) were added to refs/heads/master by this push:
     new 4430442  Javadoc.
4430442 is described below

commit 4430442363b1f545e114878760a0e323678abc90
Author: Gary Gregory <garydgreg...@gmail.com>
AuthorDate: Sun Jun 28 10:45:40 2020 -0400

    Javadoc.
---
 .../commons/text/lookup/StringLookupFactory.java   | 70 ++++++++++++++++------
 .../apache/commons/text/lookup/package-info.java   | 17 +++++-
 .../apache/commons/text/matcher/package-info.java  |  5 +-
 .../text/translate/NumericEntityUnescaper.java     | 18 +++++-
 4 files changed, 85 insertions(+), 25 deletions(-)

diff --git 
a/src/main/java/org/apache/commons/text/lookup/StringLookupFactory.java 
b/src/main/java/org/apache/commons/text/lookup/StringLookupFactory.java
index 05fc77b..8a983a3 100644
--- a/src/main/java/org/apache/commons/text/lookup/StringLookupFactory.java
+++ b/src/main/java/org/apache/commons/text/lookup/StringLookupFactory.java
@@ -26,7 +26,19 @@ import java.util.function.Function;
 import org.apache.commons.text.StringSubstitutor;
 
 /**
- * Provides access to lookups defined in this package.
+ * Create instances of string lookups or access singleton string lookups 
implemented in this package.
+ * <p>
+ * The "classic" look up is {@link #mapStringLookup(Map)}.
+ * </p>
+ * <p>
+ * The methods for variable interpolation (A.K.A. variable substitution) are:
+ * </p>
+ * <ul>
+ * <li>{@link #interpolatorStringLookup()}.</li>
+ * <li>{@link #interpolatorStringLookup(Map)}.</li>
+ * <li>{@link #interpolatorStringLookup(StringLookup)}.</li>
+ * <li>{@link #interpolatorStringLookup(Map, StringLookup, boolean)}.</li>
+ * </ul>
  * <p>
  * The default lookups are:
  * </p>
@@ -34,113 +46,133 @@ import org.apache.commons.text.StringSubstitutor;
  * <caption>Default String Lookups</caption>
  * <tr>
  * <th>Key</th>
- * <th>Implementation</th>
+ * <th>Interface</th>
  * <th>Factory Method</th>
  * <th>Since</th>
  * </tr>
  * <tr>
  * <td>{@value #KEY_BASE64_DECODER}</td>
- * <td>{@link FunctionStringLookup}</td>
+ * <td>{@link StringLookup}</td>
  * <td>{@link #base64DecoderStringLookup()}</td>
  * <td>1.6</td>
  * </tr>
  * <tr>
  * <td>{@value #KEY_BASE64_ENCODER}</td>
- * <td>{@link FunctionStringLookup}</td>
+ * <td>{@link StringLookup}</td>
  * <td>{@link #base64EncoderStringLookup()}</td>
  * <td>1.6</td>
  * </tr>
  * <tr>
  * <td>{@value #KEY_CONST}</td>
- * <td>{@link ConstantStringLookup}</td>
+ * <td>{@link StringLookup}</td>
  * <td>{@link #constantStringLookup()}</td>
  * <td>1.5</td>
  * </tr>
  * <tr>
  * <td>{@value #KEY_DATE}</td>
- * <td>{@link DateStringLookup}</td>
+ * <td>{@link StringLookup}</td>
  * <td>{@link #dateStringLookup()}</td>
  * <td>1.5</td>
  * </tr>
  * <tr>
  * <td>{@value #KEY_DNS}</td>
- * <td>{@link DnsStringLookup}</td>
+ * <td>{@link StringLookup}</td>
  * <td>{@link #dnsStringLookup()}</td>
  * <td>1.8</td>
  * </tr>
  * <tr>
  * <td>{@value #KEY_ENV}</td>
- * <td>{@link FunctionStringLookup}</td>
+ * <td>{@link StringLookup}</td>
  * <td>{@link #environmentVariableStringLookup()}</td>
  * <td>1.3</td>
  * </tr>
  * <tr>
  * <td>{@value #KEY_FILE}</td>
- * <td>{@link FileStringLookup}</td>
+ * <td>{@link StringLookup}</td>
  * <td>{@link #fileStringLookup()}</td>
  * <td>1.5</td>
  * </tr>
  * <tr>
  * <td>{@value #KEY_JAVA}</td>
- * <td>{@link JavaPlatformStringLookup}</td>
+ * <td>{@link StringLookup}</td>
  * <td>{@link #javaPlatformStringLookup()}</td>
  * <td>1.5</td>
  * </tr>
  * <tr>
  * <td>{@value #KEY_LOCALHOST}</td>
- * <td>{@link LocalHostStringLookup}</td>
+ * <td>{@link StringLookup}</td>
  * <td>{@link #localHostStringLookup()}</td>
  * <td>1.3</td>
  * </tr>
  * <tr>
  * <td>{@value #KEY_PROPERTIES}</td>
- * <td>{@link PropertiesStringLookup}</td>
+ * <td>{@link StringLookup}</td>
  * <td>{@link #propertiesStringLookup()}</td>
  * <td>1.5</td>
  * </tr>
  * <tr>
  * <td>{@value #KEY_RESOURCE_BUNDLE}</td>
- * <td>{@link ResourceBundleStringLookup}</td>
+ * <td>{@link StringLookup}</td>
  * <td>{@link #resourceBundleStringLookup()}</td>
  * <td>1.6</td>
  * </tr>
  * <tr>
  * <td>{@value #KEY_SCRIPT}</td>
- * <td>{@link ScriptStringLookup}</td>
+ * <td>{@link StringLookup}</td>
  * <td>{@link #scriptStringLookup()}</td>
  * <td>1.5</td>
  * </tr>
  * <tr>
  * <td>{@value #KEY_SYS}</td>
- * <td>{@link FunctionStringLookup}</td>
+ * <td>{@link StringLookup}</td>
  * <td>{@link #systemPropertyStringLookup()}</td>
  * <td>1.3</td>
  * </tr>
  * <tr>
  * <td>{@value #KEY_URL}</td>
- * <td>{@link UrlStringLookup}</td>
+ * <td>{@link StringLookup}</td>
  * <td>{@link #urlStringLookup()}</td>
  * <td>1.5</td>
  * </tr>
  * <tr>
  * <td>{@value #KEY_URL_DECODER}</td>
- * <td>{@link UrlDecoderStringLookup}</td>
+ * <td>{@link StringLookup}</td>
  * <td>{@link #urlDecoderStringLookup()}</td>
  * <td>1.5</td>
  * </tr>
  * <tr>
  * <td>{@value #KEY_URL_ENCODER}</td>
- * <td>{@link UrlEncoderStringLookup}</td>
+ * <td>{@link StringLookup}</td>
  * <td>{@link #urlEncoderStringLookup()}</td>
  * <td>1.5</td>
  * </tr>
  * <tr>
  * <td>{@value #KEY_XML}</td>
- * <td>{@link XmlStringLookup}</td>
+ * <td>{@link StringLookup}</td>
  * <td>{@link #xmlStringLookup()}</td>
  * <td>1.5</td>
  * </tr>
  * </table>
+ * <p>
+ * We also provide functional lookups used as building blocks for other 
lookups.
+ * <table>
+ * <caption>Functional String Lookups</caption>
+ * <tr>
+ * <th>Interface</th>
+ * <th>Factory Method</th>
+ * <th>Since</th>
+ * </tr>
+ * <tr>
+ * <td>{@link BiStringLookup}</td>
+ * <td>{@link #biFunctionStringLookup(BiFunction)}</td>
+ * <td>1.9</td>
+ * </tr>
+ * <tr>
+ * <td>{@link StringLookup}</td>
+ * <td>{@link #functionStringLookup(Function)}</td>
+ * <td>1.9</td>
+ * </tr>
+ * </table>
  *
  * @since 1.3
  */
diff --git a/src/main/java/org/apache/commons/text/lookup/package-info.java 
b/src/main/java/org/apache/commons/text/lookup/package-info.java
index 6e20eab..65ea003 100644
--- a/src/main/java/org/apache/commons/text/lookup/package-info.java
+++ b/src/main/java/org/apache/commons/text/lookup/package-info.java
@@ -14,12 +14,23 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 /**
  * <p>
- * Provides algorithms for looking up strings for use with a {@link 
org.apache.commons.text.StringSubstitutor}. The main
- * class in this package is {@link 
org.apache.commons.text.lookup.StringLookupFactory}.
+ * Provides algorithms for looking up strings for use with a {@link 
org.apache.commons.text.StringSubstitutor
+ * StringSubstitutor}. The main class in this package is {@link 
org.apache.commons.text.lookup.StringLookupFactory
+ * StringLookupFactory}.
+ * </p>
+ * <p>
+ * Use {@link org.apache.commons.text.lookup.StringLookupFactory 
StringLookupFactory} to create instances of string
+ * lookups or access singleton string lookups. The main interface is {@link 
org.apache.commons.text.lookup.StringLookup
+ * StringLookup} which is implemented here in package private classes.
+ * </p>
+ * <p>
+ * Like {@link java.util.function.BiFunction BiFunction} is a variant of 
{@link java.util.function.Function Function},
+ * this {@link org.apache.commons.text.lookup.BiStringLookup BiStringLookup} 
is a variant of
+ * {@link org.apache.commons.text.lookup.StringLookup StringLookup}.
  * </p>
- *
  * <p>
  * The initial implementation was adapted from Apache Commons Log4j 2.11.0.
  * </p>
diff --git a/src/main/java/org/apache/commons/text/matcher/package-info.java 
b/src/main/java/org/apache/commons/text/matcher/package-info.java
index 1ba8f5c..a6b1d7d 100644
--- a/src/main/java/org/apache/commons/text/matcher/package-info.java
+++ b/src/main/java/org/apache/commons/text/matcher/package-info.java
@@ -16,8 +16,9 @@
  */
 /**
  * <p>
- * Provides algorithms for matching up strings for use with a {@link 
org.apache.commons.text.StringSubstitutor}. The
- * main class here is {@link 
org.apache.commons.text.matcher.StringMatcherFactory}
+ * Provides algorithms for matching up strings for use with a {@link 
org.apache.commons.text.StringSubstitutor
+ * StringSubstitutor}. The main class here is {@link 
org.apache.commons.text.matcher.StringMatcherFactory
+ * StringMatcherFactory}.
  * </p>
  *
  * @since 1.3
diff --git 
a/src/main/java/org/apache/commons/text/translate/NumericEntityUnescaper.java 
b/src/main/java/org/apache/commons/text/translate/NumericEntityUnescaper.java
index 1b8a7ee..6ad9b73 100644
--- 
a/src/main/java/org/apache/commons/text/translate/NumericEntityUnescaper.java
+++ 
b/src/main/java/org/apache/commons/text/translate/NumericEntityUnescaper.java
@@ -32,7 +32,23 @@ import java.util.EnumSet;
 public class NumericEntityUnescaper extends CharSequenceTranslator {
 
     /** NumericEntityUnescaper option enum. */
-    public enum OPTION { semiColonRequired, semiColonOptional, 
errorIfNoSemiColon }
+    public enum OPTION {
+
+        /**
+         * Require a semicolon.
+         */
+        semiColonRequired,
+
+        /**
+         * Do not require a semicolon.
+         */
+        semiColonOptional,
+
+        /**
+         * Throw an exception if a semi-colon is missing.
+         */
+        errorIfNoSemiColon
+    }
 
     /** EnumSet of OPTIONS, given from the constructor. */
     private final EnumSet<OPTION> options;

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