CompileStatic (Groovy 3.0.9)

```
@Documented
@Retention(SOURCE)
@Target({METHOD,TYPE,CONSTRUCTOR})
public @interface CompileStatic
```
This will let the Groovy compiler use compile time checks in the style of Java then perform static compilation, thus bypassing the Groovy meta object protocol.
When a class is annotated, all methods, properties, files, inner classes, etc. of the annotated class will be type checked. When a method is annotated, static compilation applies only to items (closures and anonymous inner classes) within the method.
By using TypeCheckingMode.SKIP, static compilation can be skipped on an element within a class or method otherwise marked with CompileStatic. For example a class can be annotated with CompileStatic, and a method within can be marked to skip static checking to use dynamic language features.

See Also:

CompileDynamic

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`String[]`	`extensions`	The list of (classpath resources) paths to type checking DSL scripts, also known as type checking extensions.
`TypeCheckingMode`	`value`

- Element Detail
  - value
```
TypeCheckingMode value
```
    Default:
    
    groovy.transform.TypeCheckingMode.PASS
- - extensions
```
String[] extensions
```
    The list of (classpath resources) paths to type checking DSL scripts, also known as type checking extensions.
    
    Returns:
    
    an array of paths to groovy scripts that must be on compile classpath
    
    Default:
    
    {}