Do not detect false positive license in Java

Reference: #2865
Reported-by: Patrick Kutter @PatteSI
Reported-by: Sebastian Schuberth @sschuberth
Signed-off-by: Philippe Ombredanne <[email protected]>

src/licensedcode/data/rules/false-positive_48.RULE

@@ -0,0 +1 @@
+mutable but may not be modified by the user

src/licensedcode/data/rules/false-positive_48.yml

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+is_false_positive: yes
+notes: See in https://raw.githubusercontent.com/google/guava/v31.0.1/guava/src/com/google/common/graph/StandardValueGraph.java

tests/licensedcode/data/datadriven/lic4/StandardValueGraph.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2016 The Guava Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.common.graph;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static com.google.common.graph.GraphConstants.DEFAULT_NODE_COUNT;
+import static com.google.common.graph.Graphs.checkNonNegative;
+
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
+import java.util.TreeMap;
+import javax.annotation.CheckForNull;
+
+/**
+ * Standard implementation of {@link ValueGraph} that supports the options supplied by {@link
+ * AbstractGraphBuilder}.
+ *
+ * <p>This class maintains a map of nodes to {@link GraphConnections}.
+ *
+ * <p>Collection-returning accessors return unmodifiable views: the view returned will reflect
+ * changes to the graph (if the graph is mutable) but may not be modified by the user.
+ *
+ * <p>The time complexity of all collection-returning accessors is O(1), since views are returned.
+ *
+ */
+

tests/licensedcode/data/datadriven/lic4/StandardValueGraph.java.yml

@@ -0,0 +1,4 @@
+license_expressions:
+    - apache-2.0
+notes: there was some false positive detected before this
+