[wpilib] SendableBuilder: Make GetTable() visible

wpilibc/src/main/native/include/frc/smartdashboard/SendableBuilder.h

@@ -1,5 +1,5 @@
 /*----------------------------------------------------------------------------*/
-/* Copyright (c) 2017-2018 FIRST. All Rights Reserved.                        */
+/* Copyright (c) 2017-2020 FIRST. All Rights Reserved.                        */
 /* Open Source Software - may be modified and shared by FRC teams. The code   */
 /* must be accompanied by the FIRST BSD license file in the root directory of */
 /* the project.                                                               */
@@ -12,6 +12,7 @@
 #include <string>
 #include <vector>
 
+#include <networktables/NetworkTable.h>
 #include <networktables/NetworkTableEntry.h>
 #include <networktables/NetworkTableValue.h>
 #include <wpi/ArrayRef.h>
@@ -24,6 +25,12 @@ class SendableBuilder {
  public:
   virtual ~SendableBuilder() = default;
 
+  /**
+   * Get the network table.
+   * @return The network table
+   */
+  virtual std::shared_ptr<nt::NetworkTable> GetTable() = 0;
+
   /**
    * Set the string representation of the named data type that will be used
    * by the smart dashboard for this sendable.

wpilibc/src/main/native/include/frc/smartdashboard/SendableBuilderImpl.h

@@ -43,7 +43,7 @@ class SendableBuilderImpl : public SendableBuilder {
    * Get the network table.
    * @return The network table
    */
-  std::shared_ptr<nt::NetworkTable> GetTable();
+  std::shared_ptr<nt::NetworkTable> GetTable() override;
 
   /**
    * Return whether this sendable has an associated table.