remix-analyzer/src/solidity-analyzer/modules/staticAnalysisCommon.js
function isLLCallcode (node) {
  return isMemberAccess(node,
          exactMatch(util.escapeRegExp(lowLevelCallTypes.CALLCODE.type)),
          undefined, exactMatch(basicTypes.ADDRESS), exactMatch(lowLevelCallTypes.CALLCODE.ident))
}
function isLLCallcode (node) {
  return isMemberAccess(node,
          exactMatch(util.escapeRegExp(lowLevelCallTypes.CALLCODE.type)),
          undefined, exactMatch(basicTypes.ADDRESS), exactMatch(lowLevelCallTypes.CALLCODE.ident))
}
function isLLCallcode ( node ) { return isMemberAccess ( node , exactMatch ( util . escapeRegExp ( lowLevelCallTypes . CALLCODE . type ) ) , undefined , exactMatch ( basicTypes . ADDRESS ) , exactMatch ( lowLevelCallTypes . CALLCODE . ident ) ) }
True if low level callcode
@node {ASTNode} some AstNode
@return {bool}
True if low level callcode