proc mangle(name: string): string {....raises: [], tags: [], forbids: [].}

proc mangleParamExt(s: PSym): string {....raises: [KeyError, OSError, Exception,
    ValueError], tags: [ReadEnvEffect, ReadIOEffect, ReadDirEffect, RootEffect],
                                       forbids: [].}

proc mangleProcNameExt(graph: ModuleGraph; s: PSym): string {....raises: [],
    tags: [], forbids: [].}