DirectoryInput
interfaceDirectoryInput: QualifiedContent
| com.android.build.api.transform.DirectoryInput | 
A QualifiedContent of type directory. 
 This means the getFile() is the root directory containing the content. 
 This also contains incremental data if the transform is in incremental mode through getChangedFiles(). 
For a transform to run in incremental mode:
- Transform#isIncremental()must return- true
- The parameter isIncremental of Transform#transform(Context, Collection, Collection, TransformOutputProvider, boolean)must betrue.
getChangedFiles() will not contain any information (it will not contain the list of all the files with state Status#NOTCHANGED.) 
     When a root level directory is removed, and incremental mode is on, the instance will receive a DirectoryInput instance for the removed folder, but QualifiedContent#getFile() will return a directory that does not exist. In this case, the transform should prcess this as a removed input.
Summary
| Public methods | |
|---|---|
| abstract MutableMap<File!, Status!> | Returns the changed files. | 
| Inherited functions | |
|---|---|
Public methods
getChangedFiles
@NonNull abstract fun getChangedFiles(): MutableMap<File!, Status!>
Returns the changed files. This is only valid if the transform is in incremental mode.
