code: public void setDistriminateTokenLength(TokenType tokenType, boolean discriminateTokenLength) {
  		_discriminateTokenLength.put(tokenType, Boolean.valueOf(discriminateTokenLength));
  	}
docs: Sets which tokens should be discriminated (when matching) based on
  length. For example, if "hello" and "hi" should be matched, then length
  discrimination should be false. If only "hello" and "world", but not "hi"
  should be matched then length discrimination should be true.