Add more Javadoc cross-links between methods

gson/src/main/java/com/google/gson/FormattingStyle.java

@@ -90,6 +90,7 @@ private FormattingStyle(String newline, String indent, boolean spaceAfterSeparat
    *
    * @param newline the string value that will be used as newline.
    * @return a newly created {@link FormattingStyle}
+   * @see #getNewline()
    */
   public FormattingStyle withNewline(String newline) {
     return new FormattingStyle(newline, this.indent, this.spaceAfterSeparators);
@@ -98,10 +99,11 @@ public FormattingStyle withNewline(String newline) {
   /**
    * Creates a {@link FormattingStyle} with the specified indent string.
    *
-   * <p>Only combinations of spaces and tabs allowed in indent.
+   * <p>Only combinations of spaces and tabs are allowed in indent.
    *
    * @param indent the string value that will be used as indent.
    * @return a newly created {@link FormattingStyle}
+   * @see #getIndent()
    */
   public FormattingStyle withIndent(String indent) {
     return new FormattingStyle(this.newline, indent, this.spaceAfterSeparators);
@@ -117,6 +119,7 @@ public FormattingStyle withIndent(String indent) {
    *
    * @param spaceAfterSeparators whether to output a space after {@code ','} and {@code ':'}.
    * @return a newly created {@link FormattingStyle}
+   * @see #usesSpaceAfterSeparators()
    */
   public FormattingStyle withSpaceAfterSeparators(boolean spaceAfterSeparators) {
     return new FormattingStyle(this.newline, this.indent, spaceAfterSeparators);
@@ -126,6 +129,7 @@ public FormattingStyle withSpaceAfterSeparators(boolean spaceAfterSeparators) {
    * Returns the string value that will be used as a newline.
    *
    * @return the newline value.
+   * @see #withNewline(String)
    */
   public String getNewline() {
     return this.newline;
@@ -135,12 +139,17 @@ public String getNewline() {
    * Returns the string value that will be used as indent.
    *
    * @return the indent value.
+   * @see #withIndent(String)
    */
   public String getIndent() {
     return this.indent;
   }
 
-  /** Returns whether a space will be used after {@code ','} and {@code ':'}. */
+  /**
+   * Returns whether a space will be used after {@code ','} and {@code ':'}.
+   *
+   * @see #withSpaceAfterSeparators(boolean)
+   */
   public boolean usesSpaceAfterSeparators() {
     return this.spaceAfterSeparators;
   }

gson/src/main/java/com/google/gson/Strictness.java

@@ -12,6 +12,7 @@
  * the {@link JsonReader} and you can look at {@link JsonWriter#setStrictness(Strictness)} to see
  * how the strictness affects the {@link JsonWriter}.
  *
+ * @see GsonBuilder#setStrictness(Strictness)
  * @see JsonReader#setStrictness(Strictness)
  * @see JsonWriter#setStrictness(Strictness)
  * @since 2.11.0

gson/src/main/java/com/google/gson/stream/JsonWriter.java

@@ -261,6 +261,7 @@ public final void setIndent(String indent) {
    * level of indentation, or the newline style, to accommodate various OS styles.
    *
    * @param formattingStyle the formatting style to use, must not be {@code null}.
+   * @see #getFormattingStyle()
    * @since 2.11.0
    */
   public final void setFormattingStyle(FormattingStyle formattingStyle) {
@@ -286,6 +287,7 @@ public final void setFormattingStyle(FormattingStyle formattingStyle) {
    * Returns the pretty printing style used by this writer.
    *
    * @return the {@code FormattingStyle} that will be used.
+   * @see #setFormattingStyle(FormattingStyle)
    * @since 2.11.0
    */
   public final FormattingStyle getFormattingStyle() {
@@ -360,13 +362,17 @@ public final Strictness getStrictness() {
    * This escapes the HTML characters {@code <}, {@code >}, {@code &}, {@code =} and {@code '}
    * before writing them to the stream. Without this setting, your XML/HTML encoder should replace
    * these characters with the corresponding escape sequences.
+   *
+   * @see #isHtmlSafe()
    */
   public final void setHtmlSafe(boolean htmlSafe) {
     this.htmlSafe = htmlSafe;
   }
 
   /**
    * Returns true if this writer writes JSON that's safe for inclusion in HTML and XML documents.
+   *
+   * @see #setHtmlSafe(boolean)
    */
   public final boolean isHtmlSafe() {
     return htmlSafe;
@@ -375,6 +381,8 @@ public final boolean isHtmlSafe() {
   /**
    * Sets whether object members are serialized when their value is null. This has no impact on
    * array elements. The default is true.
+   *
+   * @see #getSerializeNulls()
    */
   public final void setSerializeNulls(boolean serializeNulls) {
     this.serializeNulls = serializeNulls;
@@ -383,6 +391,8 @@ public final void setSerializeNulls(boolean serializeNulls) {
   /**
    * Returns true if object members are serialized when their value is null. This has no impact on
    * array elements. The default is true.
+   *
+   * @see #setSerializeNulls(boolean)
    */
   public final boolean getSerializeNulls() {
     return serializeNulls;