function isWordStart(text, charNumber)
        {
            var position = charNumber;
            var nextPosition = charNumber + 1;
            return valid(position, text.length) && valid(nextPosition, text.length)
                && WebInspector.TextUtils.isWordChar(text[position]) && WebInspector.TextUtils.isWordChar(text[nextPosition])
                && WebInspector.TextUtils.isUpperCase(text[position]) && WebInspector.TextUtils.isLowerCase(text[nextPosition]);
        }
@param {string} text
@param {number} charNumber
@return {boolean}