[CLI-224] Add hasArgs and hasArg method to new Builder.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/cli/trunk@1447088 13f79535-47bb-0310-9956-ffa450edef68

Author: netomi

src/main/java/org/apache/commons/cli/Option.java

@@ -931,6 +931,16 @@ public Builder valueSeparator(final char sep)
             return this;
         }
 
+        /**
+         * Indicates that the Option will require an argument.
+         * 
+         * @return this builder, to allow method chaining
+         */
+        public Builder hasArg()
+        {
+            return hasArg(true);
+        }
+
         /**
          * Indicates if the Option has an argument or not.
          * 
@@ -943,7 +953,18 @@ public Builder hasArg(final boolean hasArg)
             numberOfArgs = hasArg ? 1 : Option.UNINITIALIZED;
             return this;
         }
-        
+
+        /**
+         * Indicates that the Option can have unlimited argument values.
+         * 
+         * @return this builder, to allow method chaining
+         */
+        public Builder hasArgs()
+        {
+            numberOfArgs = Option.UNLIMITED_VALUES;
+            return this;
+        }
+
         /**
          * Constructs an Option with the values declared by this {@link Builder}.
          *