Function gst_ caps_ features_ contains 
Source pub unsafe extern "C" fn gst_caps_features_contains(
    features: *const GstCapsFeatures,
    feature: *const c_char,
) -> gbooleanpub unsafe extern "C" fn gst_caps_features_contains(
    features: *const GstCapsFeatures,
    feature: *const c_char,
) -> gboolean