in src/main/groovy/org/jetbrains/gradle/ext/PackagePrefixContainer.groovy [19:30]
Map<String, ?> toMap() {
def contentRoot = module.contentRoot.absolutePath
def result = new LinkedHashMap<String, String>()
for (def entry : this) {
def path = entry.key
def prefix = entry.value
def file = new File(contentRoot, path)
def sourceDir = file.path.replace(File.separator, '/')
result.put(sourceDir, prefix)
}
return result
}