code: public static boolean isUserGenerated(final FieldOrMethod m) {
          return !internalIsSynthetic(m) || (m instanceof Method && couldBeLambda((Method) m));
      }
docs: Checks if the the given method was user-generated. This takes into
  account for instance lambda methods, that even though they are marked as
  "synthetic", they are user-generated, and therefore interesting to
  analysis.
  
  @param m The field or method to check.
  @return True if the given member is user generated, false otherwise.