PeerMetadataResolver (OpenSAML 4.x utility extensions - 2.1.0)

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface PeerMetadataResolver
```
Functional interface that request generators and processors use to obtain the peer metadata (most oftenly the IdP metadata).

Author:

Martin Lindström (martin.lindstrom@litsec.se)

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`EntityDescriptor`	`getMetadata(String entityID)`	Returns the metadata `EntityDescriptor` for the given entityID.

- Method Detail
  - getMetadata
```
EntityDescriptor getMetadata(String entityID)
```
    Returns the metadata EntityDescriptor for the given entityID.
    
    Parameters:
    
    entityID - the IdP entityID
    
    Returns:
    
    an EntityDescriptor object, or null if no metadata record can be found