Move the overloads of CommandLine#concat() next to each other.

RELNOTES: None.
PiperOrigin-RevId: 217836884

src/main/java/com/google/devtools/build/lib/actions/CommandLine.java

@@ -104,18 +104,6 @@ public Iterable<String> arguments(ArtifactExpander artifactExpander)
  }
  }
 
- /**
- * Returns a {@link CommandLine} that is constructed by prepending the {@code executableArgs} to
- * {@code commandLine}.
- */
- public static CommandLine concat(
- final ImmutableList<String> executableArgs, final CommandLine commandLine) {
- if (executableArgs.isEmpty()) {
- return commandLine;
- }
- return new PrefixedCommandLine(executableArgs, commandLine);
- }
-
  @AutoCodec
  @VisibleForSerialization
  static class SuffixedCommandLine extends CommandLine {
@@ -140,6 +128,18 @@ public Iterable<String> arguments(ArtifactExpander artifactExpander)
  }
  }
 
+ /**
+ * Returns a {@link CommandLine} that is constructed by prepending the {@code executableArgs} to
+ * {@code commandLine}.
+ */
+ public static CommandLine concat(
+ final ImmutableList<String> executableArgs, final CommandLine commandLine) {
+ if (executableArgs.isEmpty()) {
+ return commandLine;
+ }
+ return new PrefixedCommandLine(executableArgs, commandLine);
+ }
+
  /**
  * Returns a {@link CommandLine} that is constructed by appending the {@code args} to {@code
  * commandLine}.