This function is for use with a SOAP client contacting a WS-Trust endpoint for a security token.
create type policy_struct as ( usage - integrity/confidentiality token_type - wsse token type: x509; context token etc. token_issuer - URL of the issuer user_name - represent to issuer, user_pass, debug - dump req/res. 1 - for RequestSecurityToken, 2 - end point token - base64 encoded Binary Security Token )
A security token.