A DynamoDB expression serialized to a string and accompanied by the name and value substitutions that have been performed during serialization.
A map of name tokens => the property name for which the token has been substituted in the serialized expression.
A map of value tokens => the value for which the token has been substituted in the serialized expression.
A serialized expression.
A DynamoDB expression serialized to a string and accompanied by the name and value substitutions that have been performed during serialization.