Added methods (#978)

Signed-off-by: dhoard <doug.hoard@gmail.com>

Author: dhoard

prometheus-metrics-model/src/main/java/io/prometheus/metrics/model/snapshots/Label.java

@@ -1,5 +1,7 @@
 package io.prometheus.metrics.model.snapshots;
 
+import java.util.Objects;
+
 /**
  * Utility for iterating over {@link Labels}.
  */
@@ -16,6 +18,7 @@ public Label(String name, String value) {
     public String getName() {
         return name;
     }
+
     public String getValue() {
         return value;
     }
@@ -25,4 +28,25 @@ public int compareTo(Label other) {
         int nameCompare = name.compareTo(other.name);
         return nameCompare != 0 ? nameCompare : value.compareTo(other.value);
     }
+
+    @Override
+    public String toString() {
+        return "Label{" +
+                "name='" + name + '\'' +
+                ", value='" + value + '\'' +
+                '}';
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Label label = (Label) o;
+        return Objects.equals(name, label.name) && Objects.equals(value, label.value);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(name, value);
+    }
 }