Running some tasks before building, you can create tasks in your projects with java and run before compileJava task, or execute "runSourceTask" task. To use this plugin, you need add compileOnly dependency "com.github.luiqn2007:UselessPluginLib", and create task class in `lq2007.plugins.gradle_plugin` package in your source, implement lq2007.plugins.gradle_plugin.support.ISourcePlugin interface. You can create or edit source by javaparser.