@@ -18,6 +18,7 @@
 
 import com.google.api.core.BetaApi;
 import com.google.auto.value.AutoValue;
+import org.checkerframework.checker.nullness.qual.Nullable;
 
 /**
 * Class for Identity and Access Management (IAM) policies. IAM policies are used to specify access
@@ -32,9 +33,11 @@
 @AutoValue
 public abstract class Condition {
 /** Get IAM Policy Binding Condition Title */
+@Nullable
 public abstract String getTitle();
 
 /** Get IAM Policy Binding Condition Description */
+@Nullable
 public abstract String getDescription();
 
 /** Get IAM Policy Binding Condition Expression */
@@ -51,10 +54,10 @@ public static Builder newBuilder() {
 @AutoValue.Builder
 public abstract static class Builder {
 /** Set IAM Policy Binding Condition Title */
-public abstract Builder setTitle(String title);
+public abstract Builder setTitle(@Nullable String title);
 
 /** Set IAM Policy Binding Condition Description */
-public abstract Builder setDescription(String description);
+public abstract Builder setDescription(@Nullable String description);
 
 /** Set IAM Policy Binding Condition Expression */
 public abstract Builder setExpression(String expression);

@@ -0,0 +1,30 @@
+package com.google.cloud;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import org.junit.Test;
+
+public final class ConditionTest {
+
+@Test
+public void title_nullable() {
+Condition condition = Condition.newBuilder()
+.setTitle(null)
+.setDescription("desc")
+.setExpression("expr")
+.build();
+
+assertThat(condition.getTitle()).isNull();
+}
+
+@Test
+public void description_nullable() {
+Condition condition = Condition.newBuilder()
+.setTitle("title")
+.setDescription(null)
+.setExpression("expr")
+.build();
+
+assertThat(condition.getDescription()).isNull();
+}
+}