Accessing previously deserialized field data from a different field

class MySchema(NamespacedSchema):
    name = fields.String()
    customData = CustomDataField()
    complextData = ComplextDataField()

In the above schema, the ComplextDataField depends on the customData to deserialize, but then customData is not available in the data dict. Reading the docs, it looks like we can use schema context to pass data between dependent fields, any other easy way?

Any reason the previously deserialized fields are not available in the data param ? in def deserialize(self, value, attr=None, data=None)

Start with the field deserialization path around deserialize(self, value, attr=None, data=None) and the schema-context documentation mentioned in the issue. Determine whether dependent fields should receive previously deserialized data, using the example schema to define the expected behavior; no file or test path is identified in the payload.