anchor.diff:  JSON Web Key (JWK) allows for a Public Key to be formatted in json and optionally Base64
   encoded.
   
  -At minimum `JWK` formatted Public Keys must contain the `kty` field.  RSA public keys must
  +At minimum JWK formatted Public Keys must contain the `kty` field.  RSA Public Keys must
   contain the `n` and `e` fields.
   
   The following example is the previously shown PKCS#8 PEM formatted Public Key converted to
  
positive.code:  - JSON Web Key (JWK) Base64 URL encoded
   - JSON Web Key Set (JWKS) Base64 URL encoded
  
  Attempts to parse the Public Key material will proceed in the order specified above until
  a valid Public Key can be derived.
  
  Support for other Public Key formats such as PKCS#1, SSH2, or OpenSSH Public Key format is
  
negative.code: See https://docs.oracle.com/javase/8/docs/api/java/net/URL.html[java.net.URL] javadoc for
  more details.
  
  Parsing of the `InputStream` occurs as defined in <<Supported Public Key Formats>> and must
  return Public Key text in one of the supported formats.
  
  #### `mp.jwt.verify.issuer` (optional)
  
  