code: public static Expression parse(final InputStream in, Charset encoding) {
          return simplifiedParse(EXPRESSION, provider(in, encoding));
      }
docs: Parses the Java code contained in the {@link InputStream} and returns a
  {@link Expression} that represents it.
  
  @param in {@link InputStream} containing Java source code. It will be closed after parsing.
  @param encoding encoding of the source code
  @return Expression representing the Java source code
  @throws ParseProblemException if the source code has parser errors