20 package net.sf.gridarta.model.filter;
22 import java.util.Collection;
23 import java.util.Collections;
24 import java.util.HashMap;
26 import org.jetbrains.annotations.NotNull;
27 import org.jetbrains.annotations.Nullable;
36 private final Map<String, String>
properties =
new HashMap<>();
56 public void setProperty(@NotNull
final String name, @NotNull
final String value) {
58 if (oldValue !=
null && oldValue.equals(value)) {
73 return Collections.unmodifiableSet(
properties.keySet());