fix: fix errors from groovy guru

build.gradle

@@ -7,6 +7,7 @@
 
 plugins {
     id 'groovy'
+    id 'java-gradle-plugin'
     id 'maven-publish'
 }
 
@@ -20,4 +21,10 @@ gradlePlugin {
             implementationClass = 'com.fahrecker.gradle.FlutterGradlePlugin'
         }
     }
+}
+
+task printClasspath {
+    doLast {
+        configurations.runtimeClasspath.each { println it }
+    }
 }