public static String methodString(int flags) {
    return humanHelper(flags, METHOD_FLAGS, CONV_METHOD);
  }
Returns a human-oriented string representing the given access flags, as defined on methods (not
classes or fields).

@param flags the flags
@return {@code non-null;} human-oriented string
android/android_framework/dex-maker/src/main/java/com/android/dx/rop/code/AccessFlags.java