This property contains the instruction sent by the server during keyboard-interactive authentication.
Use this read-only property to get the "instruction" string which is sent by the server
when authentication is performed using keyboard-interactive method.
During keyboard-interactive authentication server sends to client some textual instructions in a form of two strings: "name" and "instruction". The client must follow these instructions to succeed authentication. For example: "name" = "Welcome to authentication", "instruction" = "Please, enter your password". The "name" string is specified by KbdIntName property.