code: function isLowLevelCall (node) {
    return isLLCall(node) ||
            isLLCallcode(node) ||
            isLLDelegatecall(node) ||
            isLLSend(node) ||
            isLLSend050(node) ||
            isLLCall050(node) ||
            isLLDelegatecall050(node)
  }
docs: True if low level call (send, call, delegatecall, callcode)
  @node {ASTNode} some AstNode
  @return {bool}