// projectNumber is the numeric identifier. Note: there is also a unique string-based project identifier as well (see https://cloud.google.com/resource-manager/docs/creating-managing-projects#identifying_projects)
projectNumber,zone,err:=getProjectAndZone()
projectID,zone,err:=getProjectAndZone()
iferr!=nil{
returnnil,err
}
// Default projectID to known project number
projectID:=projectNumber
region,err:=GetGCERegion(zone)
iferr!=nil{
returnnil,err
}
// networkProjectNumber is a numeric identifier similar to the projectNumber above.