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

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

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