class_docstr: A trait for memory views of bytes.
code: def validate(self, obj, value):
      if isinstance(value, memoryview) and value.format == "B":
          return value
      self.error(obj, value)
  
imports: import re
  import traitlets
  import datetime
label_desc: Use image node_id 1 for calling the ByteMemoryView obj's underlying member method code with example usage: obj.validate(obj, value) and returns: value