pub unsafe extern "C" fn zvec_doc_remove_field(
doc: *mut zvec_doc_t,
field_name: *const c_char,
) -> zvec_error_code_tpub unsafe extern "C" fn zvec_doc_remove_field(
doc: *mut zvec_doc_t,
field_name: *const c_char,
) -> zvec_error_code_t