code: function createAttributeExpressions(sourceNode, sourceFile, sourceCode) {
    return findDynamicAttributes(sourceNode)
      .map(attribute => createExpression(attribute, sourceFile, sourceCode))
  }
docs: Create the attribute expressions
  @param   {RiotParser.Node} sourceNode - any kind of node parsed via riot parser
  @param   {stiring} sourceFile - source file path
  @param   {string} sourceCode - original source
  @returns {Array} array containing all the attribute expressions