code: public static Expression parseResource(final String path, Charset encoding) throws IOException {
          return simplifiedParse(EXPRESSION, resourceProvider(path, encoding));
      }
docs: Parses the Java code contained in a resource and returns a
  {@link Expression} that represents it.<br>
  
  @param path path to a resource containing Java source code. As resource is accessed through a class loader, a
  leading "/" is not allowed in pathToResource
  @param encoding encoding of the source code
  @return Expression representing the Java source code
  @throws ParseProblemException if the source code has parser errors
  @throws IOException the path could not be accessed