org.gradle.api.tasks
Interfaces 
AntBuilderAware
ConventionValue
GroovySourceSet
ScalaSourceSet
SourceSet
SourceSetContainer
TaskCollection
TaskContainer
TaskDependency
WorkResult
Classes 
Clean
Copy
Directory
SourceTask
Upload
Exceptions 
StopActionException
StopExecutionException
Annotation Types 
InputDirectory
InputFile
InputFiles
Optional
OutputDirectory
OutputFile
SkipWhenEmpty
TaskAction