StringDef file template for Android

StringDef.java

import androidx.annotation.StringDef;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;

public class ${INTERFACE_NAME}s {
    public static final String placeholder = "placeholder_value";

    @StringDef({placeholder})
    @Retention(RetentionPolicy.SOURCE)
    public @interface ${INTERFACE_NAME} {}
}