ScanEnvironment (hibernate-core JavaDocs)

```
public interface ScanEnvironment
```
Describes the environment in which the scan will occur.
Note that much of this comes from the PU in JPA sense. This is intended as an abstraction over the PU in JPA cases, as well as a delegate allowing usage in non-JPA cases. With the planned move to unify the cfg.xml and persistence.xml schemas (like we are doing with hbm.xml and orm.xml) this becomes less needed (at least parts of it).
After unification, I think the biggest difference is that we will not need to pass ScanEnvironment into the MetadataSources/MetadataBuilder while for the time being we will need to.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`List<String>`	`getExplicitlyListedClassNames()`	Returns any classes which are explicitly listed as part of the "persistence unit".
`List<String>`	`getExplicitlyListedMappingFiles()`	Returns the mapping files which are explicitly listed as part of the "persistence unit".
`List<URL>`	`getNonRootUrls()`	Returns any non-root URLs for scanning.
`URL`	`getRootUrl()`	Returns the root URL for scanning.

- Method Detail
  - getRootUrl
```
URL getRootUrl()
```
    Returns the root URL for scanning. Can be null, indicating that no root URL scanning should be done (aka, if maybe a root URL is not known).
    
    Returns:
    
    The root URL
    
    See Also:
    
    ScanOptions.canDetectUnlistedClassesInRoot()
  - getNonRootUrls
```
List<URL> getNonRootUrls()
```
    Returns any non-root URLs for scanning. Can be null/empty to indicate that no non-root URL scanning should be done.
    
    Returns:
    
    The non-root URLs
    
    See Also:
    
    ScanOptions.canDetectUnlistedClassesInNonRoot()
  - getExplicitlyListedClassNames
```
List<String> getExplicitlyListedClassNames()
```
    Returns any classes which are explicitly listed as part of the "persistence unit".
    
    Returns:
    
    The explicitly listed classes
  - getExplicitlyListedMappingFiles
```
List<String> getExplicitlyListedMappingFiles()
```
    Returns the mapping files which are explicitly listed as part of the "persistence unit".
    
    Returns:
    
    The explicitly listed mapping files.