[docs] Add missing JavaDocs (#6146)

wpilibNewCommands/src/main/java/edu/wpi/first/wpilibj2/command/Command.java

@@ -25,8 +25,10 @@ import java.util.function.BooleanSupplier;
  * <p>This class is provided by the NewCommands VendorDep
  */
 public abstract class Command implements Sendable {
+  /** Requirements set. */
   protected Set<Subsystem> m_requirements = new HashSet<>();
 
+  /** Default constructor. */
   @SuppressWarnings("this-escape")
   protected Command() {
     String name = getClass().getName();

wpilibNewCommands/src/main/java/edu/wpi/first/wpilibj2/command/CommandBase.java

@@ -16,4 +16,9 @@ import edu.wpi.first.util.sendable.Sendable;
  */
 @Deprecated(since = "2024", forRemoval = true)
 @SuppressWarnings("PMD.AbstractClassWithoutAnyMethod")
-public abstract class CommandBase extends Command {}
+public abstract class CommandBase extends Command {
+  /** Default constructor. */
+  public CommandBase() {
+    super();
+  }
+}

wpilibNewCommands/src/main/java/edu/wpi/first/wpilibj2/command/PIDCommand.java

@@ -19,9 +19,16 @@ import java.util.function.DoubleSupplier;
  * <p>This class is provided by the NewCommands VendorDep
  */
 public class PIDCommand extends Command {
+  /** PID controller. */
   protected final PIDController m_controller;
+
+  /** Measurement getter. */
   protected DoubleSupplier m_measurement;
+
+  /** Setpoint getter. */
   protected DoubleSupplier m_setpoint;
+
+  /** PID controller output consumer. */
   protected DoubleConsumer m_useOutput;
 
   /**

wpilibNewCommands/src/main/java/edu/wpi/first/wpilibj2/command/PIDSubsystem.java

@@ -15,7 +15,10 @@ import edu.wpi.first.math.controller.PIDController;
  * <p>This class is provided by the NewCommands VendorDep
  */
 public abstract class PIDSubsystem extends SubsystemBase {
+  /** PID controller. */
   protected final PIDController m_controller;
+
+  /** Whether PID controller output is enabled. */
   protected boolean m_enabled;
 
   /**
@@ -47,6 +50,11 @@ public abstract class PIDSubsystem extends SubsystemBase {
     }
   }
 
+  /**
+   * Returns the PIDController.
+   *
+   * @return The controller.
+   */
   public PIDController getController() {
     return m_controller;
   }

wpilibNewCommands/src/main/java/edu/wpi/first/wpilibj2/command/ProfiledPIDCommand.java

@@ -21,9 +21,16 @@ import java.util.function.Supplier;
  * <p>This class is provided by the NewCommands VendorDep
  */
 public class ProfiledPIDCommand extends Command {
+  /** Profiled PID controller. */
   protected final ProfiledPIDController m_controller;
+
+  /** Measurement getter. */
   protected DoubleSupplier m_measurement;
+
+  /** Goal getter. */
   protected Supplier<State> m_goal;
+
+  /** Profiled PID controller output consumer. */
   protected BiConsumer<Double, State> m_useOutput;
 
   /**

wpilibNewCommands/src/main/java/edu/wpi/first/wpilibj2/command/ProfiledPIDSubsystem.java

@@ -17,7 +17,10 @@ import edu.wpi.first.math.trajectory.TrapezoidProfile;
  * <p>This class is provided by the NewCommands VendorDep
  */
 public abstract class ProfiledPIDSubsystem extends SubsystemBase {
+  /** Profiled PID controller. */
   protected final ProfiledPIDController m_controller;
+
+  /** Whether the profiled PID controller output is enabled. */
   protected boolean m_enabled;
 
   /**
@@ -47,6 +50,11 @@ public abstract class ProfiledPIDSubsystem extends SubsystemBase {
     }
   }
 
+  /**
+   * Returns the ProfiledPIDController.
+   *
+   * @return The controller.
+   */
   public ProfiledPIDController getController() {
     return m_controller;
   }

wpilibNewCommands/src/main/java/edu/wpi/first/wpilibj2/command/WaitCommand.java

@@ -14,7 +14,9 @@ import edu.wpi.first.wpilibj.Timer;
  * <p>This class is provided by the NewCommands VendorDep
  */
 public class WaitCommand extends Command {
+  /** The timer used for waiting. */
   protected Timer m_timer = new Timer();
+
   private final double m_duration;
 
   /**

wpilibNewCommands/src/main/java/edu/wpi/first/wpilibj2/command/button/InternalButton.java

@@ -42,10 +42,20 @@ public class InternalButton extends Trigger {
     this.m_inverted = inverted;
   }
 
+  /**
+   * Sets whether to invert button state.
+   *
+   * @param inverted Whether button state should be inverted.
+   */
   public void setInverted(boolean inverted) {
     m_inverted.set(inverted);
   }
 
+  /**
+   * Sets whether button is pressed.
+   *
+   * @param pressed Whether button is pressed.
+   */
   public void setPressed(boolean pressed) {
     m_pressed.set(pressed);
   }