Enable linting and treat warnings as errors

Author: wilkinsona

build.gradle

@@ -87,6 +87,10 @@ java {
 	withSourcesJar()
 }
 
+tasks.withType(JavaCompile).configureEach {
+	options.compilerArgs.addAll "-Werror", "-Xlint:unchecked", "-Xlint:deprecation", "-Xlint:rawtypes", "-Xlint:varargs"
+}
+
 tasks.named("test").configure {
 	useJUnitPlatform()
 }

src/main/java/io/spring/gradle/dependencymanagement/internal/maven/ConfigurationModelResolver.java

@@ -24,7 +24,6 @@
 import io.spring.gradle.dependencymanagement.org.apache.maven.model.Parent;
 import io.spring.gradle.dependencymanagement.org.apache.maven.model.Repository;
 import io.spring.gradle.dependencymanagement.org.apache.maven.model.building.FileModelSource;
-import io.spring.gradle.dependencymanagement.org.apache.maven.model.building.ModelSource;
 import io.spring.gradle.dependencymanagement.org.apache.maven.model.resolution.InvalidRepositoryException;
 import io.spring.gradle.dependencymanagement.org.apache.maven.model.resolution.ModelResolver;
 import io.spring.gradle.dependencymanagement.org.apache.maven.model.resolution.UnresolvableModelException;
@@ -34,7 +33,8 @@
 
 /**
  * A {@link ModelResolver} that uses a {@link Configuration} to resolve the
- * {@link ModelSource} for a pom. requested model.
+ * {@link io.spring.gradle.dependencymanagement.org.apache.maven.model.building.ModelSource}
+ * for a pom. requested model.
  *
  * @author Andy Wilkinson
  */