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

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

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