size: the number of bits that are occupied by this field in the first byte of a binary string.  # noqa: E501
  size must be in the range ]0;8].
:param str length_of: The name of the field this field value is measuring/representing.  # noqa: E501
:param callable adjust: A function that modifies the value computed from the "length_of" field.  # noqa: E501

adjust can be used for instance to add a constant to the length_of field  # noqa: E501
 length. For instance, let's say that i2len of the length_of field
 returns 2. If adjust is lambda x: x+1 In that case, this field will
 value 3 at build time.
:return: None
:raises: AssertionError
Nr