message: doc(runtime-c-api) Improve documentation of `wasmer_memory_data_length`.
diff: @@ -187,7 +187,15 @@ pub extern "C" fn wasmer_memory_data(memory: *const wasmer_memory_t) -> *mut u8
  memory.view::<u8>()[..].as_ptr() as *mut Cell<u8> as *mut u8
  }
  -/// Gets the size in bytes of a Memory
  +/// Gets the size in bytes of the memory data.
  +///
  +/// This function returns 0 if `memory` is NULL.
  +///
  +/// Example:
  +///
  +/// ```c
  +/// uint32_t memory_data_length = wasmer_memory_data_length(memory);
  +/// ```
  #[allow(clippy::cast_ptr_alignment)]
  #[no_mangle]
  pub extern "C" fn wasmer_memory_data_length(mem: *mut wasmer_memory_t) -> u32 {
  