# Functions
NewError - creates an Error instance with built-in error.
NewErrorWithMsg - creates an Error instance with custom message.
NewErrorWithMsgf - creates an Error instance with formatted message.
# Constants
Error Codes.
Error Codes.
Error Codes.
Error Codes.
Error Codes.
Error Codes.
Error Codes.
Error Codes.
Error Codes.
Error Codes.
Error Codes.
Error Codes.
Error Codes.
# Type aliases
ErrorCode - refer to const for detail.