Fixed cannot call public methods in via reflection

google-cloud-clients/google-cloud-firestore/src/main/java/com/google/cloud/firestore/BasePath.java

@@ -25,7 +25,7 @@
  * BasePath represents a path sequence in the Firestore database. It is composed of an ordered
  * sequence of string segments.
  */
-abstract class BasePath<B extends BasePath<B>> implements Comparable<B> {
+public abstract class BasePath<B extends BasePath<B>> implements Comparable<B> {
 
   /**
    * Returns the segments that make up this path.

google-cloud-clients/google-cloud-firestore/src/main/java/com/google/cloud/firestore/UpdateBuilder.java

@@ -43,7 +43,7 @@
  * Abstract class that collects and bundles all write operations for {@link Transaction} and {@link
  * WriteBatch}.
  */
-abstract class UpdateBuilder<T extends UpdateBuilder> {
+public abstract class UpdateBuilder<T extends UpdateBuilder> {
 
   private static class Mutation {
     Write.Builder document;

google-cloud-clients/google-cloud-storage/src/main/java/com/google/cloud/storage/Option.java

@@ -24,7 +24,7 @@
 import java.util.Objects;
 
 /** Base class for Storage operation option. */
-abstract class Option implements Serializable {
+public abstract class Option implements Serializable {
 
   private static final long serialVersionUID = -73199088766477208L;