code: function getClass() {
    const type = NodeType.ClassType;
    const token = tokens[pos];
    const line = token.ln;
    const column = token.col;
  
    // Skip `.`
    pos++;
  
    const content = [getIdent()];
  
    return newNode(type, content, line, column);
  }
docs: Get node with a class selector
  @return {Node}