Function gv_fetchmethod_pvn_flags 

pub unsafe fn gv_fetchmethod_pvn_flags(
    my_perl: *mut PerlInterpreter,
    a: *mut HV,
    b: *const c_char,
    c: STRLEN,
    d: U32,
) -> *mut GV

gv_fetchmethod_pvn_flags [THX] - macro function