CmdLineParser: Make isBoolean(String) method private and improve its name

Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: I77fd653d5a138f7f07b6423670caa3dcce4a8d25

java/com/google/gerrit/util/cli/CmdLineParser.java

diff --git a/java/com/google/gerrit/util/cli/CmdLineParser.java b/java/com/google/gerrit/util/cli/CmdLineParser.java
index 0fff861..be043fd 100644
--- a/java/com/google/gerrit/util/cli/CmdLineParser.java
+++ b/java/com/google/gerrit/util/cli/CmdLineParser.java
@@ -330,7 +330,7 @@
       String name = makeOption(key);
 
       if (isKnownOption(name)) {
-        if (isBoolean(name)) {
+        if (isBooleanOption(name)) {
           boolean on = false;
           for (String value : params.get(key)) {
             on = toBoolean(key, value);
@@ -353,10 +353,6 @@
     parser.parseArgument(knownArgs.toArray(new String[knownArgs.size()]));
   }
 
-  public boolean isBoolean(String name) {
-    return findHandler(makeOption(name)) instanceof BooleanOptionHandler;
-  }
-
   public void parseWithPrefix(String prefix, Object bean) {
     parser.parseWithPrefix(prefix, bean);
   }
@@ -365,6 +361,10 @@
     parser.addOptionsWithMetRequirements();
   }
 
+  private boolean isBooleanOption(String name) {
+    return findHandler(makeOption(name)) instanceof BooleanOptionHandler;
+  }
+
   private String makeOption(String name) {
     if (!name.startsWith("-")) {
       if (name.length() == 1) {