code: def from_bytes(self, data):
      self.value = f"{data.decode('utf8')} from bytes"
      return self
  
imports: import pytest
  import srsly
  from thinc.api import Linear, Maxout, Model, Shim, chain, deserialize_attr, serialize_attr, with_array
label_desc: Use image node_id 2 for calling the SerializableAttr obj's underlying member method code with example usage: obj.from_bytes(data) and returns: self