code: public static boolean isSupportedJDKType(TypeName typeName) {
  		if (typeName.isPrimitive()) {
  			return getPrimitiveTransform(typeName) != null;
  		}
  
  		String name = typeName.toString();
  
  		if (name.startsWith("java.lang")) {
  			return getLanguageTransform(typeName) != null;
  		}
  
  		if (name.startsWith("java.util")) {
  			return getUtilTransform(typeName) != null;
  		}
  
  		if (name.startsWith("java.math")) {
  			return getMathTransform(typeName) != null;
  		}
  
  		if (name.startsWith("java.net")) {
  			return getNetTransform(typeName) != null;
  		}
  
  		if (name.startsWith("java.sql")) {
  			return getSqlTransform(typeName) != null;
  		}
  
  		return false;
  	}
docs: Checks if is supported JDK type.
  
  @param typeName
  the type name
  @return true, if is supported JDK type