# Functions
GetValueFrom returns the value of 'attributeName0' from a cert.
NewAttributesHandlerImpl creates a new AttributesHandlerImpl from a pb.ChaincodeSecurityContext object.
# Structs
Attribute defines a name, value pair to be verified.
AttributesHandlerImpl is an implementation of AttributesHandler interface.
# Interfaces
AttributesHandler is an entity can be used to both verify and read attributes.