Minor refactor of the antlr4 defaults.

Author: nedtwigg

lib/src/main/java/com/diffplug/spotless/antlr4/Antlr4Defaults.java

@@ -15,22 +15,17 @@
  */
 package com.diffplug.spotless.antlr4;
 
-import java.util.Collections;
-import java.util.List;
-
 public class Antlr4Defaults {
-
 	private static final String LICENSE_HEADER_DELIMITER = "(grammar|lexer grammar|parser grammar)";
-
-	private static final List<String> defaultIncludes = Collections.singletonList("src/*/antlr4/**/*.g4");
+	private static final String INCLUDES = "src/*/antlr4/**/*.g4";
 
 	private Antlr4Defaults() {}
 
 	public static String licenseHeaderDelimiter() {
 		return LICENSE_HEADER_DELIMITER;
 	}
 
-	public static List<String> defaultIncludes() {
-		return defaultIncludes;
+	public static String includes() {
+		return INCLUDES;
 	}
 }

plugin-gradle/src/main/java/com/diffplug/gradle/spotless/Antlr4Extension.java

@@ -53,7 +53,7 @@ private FormatterStep createStep() {
 	@Override
 	protected void setupTask(SpotlessTask task) {
 		if (target == null) {
-			target = parseTarget(Antlr4Defaults.defaultIncludes());
+			target = parseTarget(Antlr4Defaults.includes());
 		}
 		super.setupTask(task);
 	}

plugin-maven/src/main/java/com/diffplug/spotless/maven/antlr4/Antlr4.java

@@ -29,12 +29,9 @@
  * and anltr4-specific (e.g. {@link Antlr4Formatter}) steps.
  */
 public class Antlr4 extends FormatterFactory {
-
-	private static final Set<String> DEFAULT_INCLUDES = ImmutableSet.copyOf(Antlr4Defaults.defaultIncludes());
-
 	@Override
 	public Set<String> defaultIncludes() {
-		return DEFAULT_INCLUDES;
+		return ImmutableSet.of(Antlr4Defaults.includes());
 	}
 
 	@Override