in Facebook.Unity.Editor/iOS/PBXProjectData.cs [331:350]
void RefreshAuxMaps()
{
foreach (var targetEntry in nativeTargets.GetEntries())
{
var map = new Dictionary<string, PBXBuildFileData>();
foreach (string phaseGuid in targetEntry.Value.phases)
{
if (frameworks.HasEntry(phaseGuid))
RefreshBuildFilesMapForBuildFileGuidList(map, frameworks[phaseGuid]);
if (resources.HasEntry(phaseGuid))
RefreshBuildFilesMapForBuildFileGuidList(map, resources[phaseGuid]);
if (sources.HasEntry(phaseGuid))
RefreshBuildFilesMapForBuildFileGuidList(map, sources[phaseGuid]);
if (copyFiles.HasEntry(phaseGuid))
RefreshBuildFilesMapForBuildFileGuidList(map, copyFiles[phaseGuid]);
}
m_FileGuidToBuildFileMap[targetEntry.Key] = map;
}
RefreshMapsForGroupChildren("", "", PBXSourceTree.Source, GroupsGetMainGroup());
}