Function mpsgraph_executable_specialize 

pub unsafe extern "C" fn mpsgraph_executable_specialize(
    handle: *mut c_void,
    device_handle: *mut c_void,
    input_type_handles: *const *mut c_void,
    input_type_count: usize,
    compilation_descriptor_handle: *mut c_void,
) -> bool

Calls the MPSGraph framework counterpart for mpsgraph_executable_specialize.