code: public boolean isExplicitChar(final char c) {
          final String explicitChars = mConfig.EXPLICIT_CHARS;
          for (int i = 0; i < explicitChars.length(); i++) {
              char explicitChar = explicitChars.charAt(i);
              if (c == explicitChar) {
                  return true;
              }
          }
          return false;
      }
docs: {@inheritDoc}