code: public static void eachFileMatch(final Path self, final Object nameFilter, @ClosureParams(value = SimpleType.class, options = "java.nio.file.Path") final Closure closure) throws IOException {
          // throws FileNotFoundException, IllegalArgumentException {
          eachFileMatch(self, FileType.ANY, nameFilter, closure);
      }
docs: Invokes the closure for each file whose name (file.name) matches the given nameFilter in the given directory
  - calling the {@link org.codehaus.groovy.runtime.DefaultGroovyMethods#isCase(Object, Object)} method to determine if a match occurs.  This method can be used
  with different kinds of filters like regular expressions, classes, ranges etc.
  Both regular files and subdirectories are matched.
  
  @param self       a Path (that happens to be a folder/directory)
  @param nameFilter the nameFilter to perform on the name of the file (using the {@link org.codehaus.groovy.runtime.DefaultGroovyMethods#isCase(Object, Object)} method)
  @param closure    the closure to invoke
  @throws java.io.FileNotFoundException if the given directory does not exist
  @throws IllegalArgumentException      if the provided Path object does not represent a directory
  @see #eachFileMatch(Path, groovy.io.FileType, Object, groovy.lang.Closure)
  @since 2.3.0