docs: public String resolveStaticField(ValueExpression exprVE) {
          if (exprVE != null) {
              String exprStr = exprVE.getExpressionString();
              Matcher matcher = STATIC_FIELD_PATTERN.matcher(exprStr);
              if (matcher.find()) {
                  return matcher.group(1);
              }
          }
          return null;
      }