pub unsafe extern "C" fn aws_get_environment_value(
allocator: *mut aws_allocator,
variable_name: *const aws_string,
value_out: *mut *mut aws_string
) -> c_intpub unsafe extern "C" fn aws_get_environment_value(
allocator: *mut aws_allocator,
variable_name: *const aws_string,
value_out: *mut *mut aws_string
) -> c_int