1 files changed, 33 insertions, 0 deletions
diff --git a/impl_core/src/main/java/io/opencensus/implcore/internal/CheckerFrameworkUtils.java b/impl_core/src/main/java/io/opencensus/implcore/internal/CheckerFrameworkUtils.java
new file mode 100644
index 00000000..f08289cf
--- /dev/null
+++ b/impl_core/src/main/java/io/opencensus/implcore/internal/CheckerFrameworkUtils.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2017, OpenCensus 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 io.opencensus.implcore.internal;
+
+import javax.annotation.Nullable;
+
+/**
+ * Utility methods for suppressing nullness warnings and working around Checker Framework issues.
+ */
+public final class CheckerFrameworkUtils {
+  private CheckerFrameworkUtils() {}
+
+  /** Suppresses warnings about a nullable value. */
+  // TODO(sebright): Try to remove all uses of this method.
+  @SuppressWarnings("nullness")
+  public static <T> T castNonNull(@Nullable T arg) {
+    return arg;
+  }
+}