Function module_program 

pub fn module_program(
    module: &LoadedModule,
    path: &Path,
    library: Library,
    name: &str,
) -> Result<Vec<(String, Option<SourceFile>)>, String>

Whether a CICS task of a run that began with module can begin with the program name, as a CALL of it finds one, and if so the files a module records for it (LoadedProgram::recorded); Err says why not.