SessionFactoryBuilderFactory (hibernate-core JavaDocs)

```
public interface SessionFactoryBuilderFactory
```
An extension point for integrators that wish to hook into the process of how a SessionFactory is built. Intended as a "discoverable service" (ServiceLoader). There can be at most one implementation discovered that returns a non-null SessionFactoryBuilder.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`SessionFactoryBuilder`	`getSessionFactoryBuilder(MetadataImplementor metadata, SessionFactoryBuilderImplementor defaultBuilder)`	The contract method.

- Method Detail
  - getSessionFactoryBuilder
```
SessionFactoryBuilder getSessionFactoryBuilder(MetadataImplementor metadata,
                                               SessionFactoryBuilderImplementor defaultBuilder)
```
    The contract method. Return the SessionFactoryBuilder. May return null
    
    Parameters:
    
    metadata - The metadata from which we will be building a SessionFactory.
    
    defaultBuilder - The default SessionFactoryBuilder instance. If the SessionFactoryBuilder being built here needs to use this passed SessionFactoryBuilder instance it is the responsibility of the built SessionFactoryBuilder impl to delegate configuration calls to the passed default impl.
    
    Returns:
    
    The SessionFactoryBuilder, or null