code: package org.eclipse.milo.opcua.sdk.client.model.types.variables;
  
  import java.util.concurrent.CompletableFuture;
  
  import org.eclipse.milo.opcua.stack.core.UaException;
  import org.eclipse.milo.opcua.stack.core.types.builtin.StatusCode;
  import org.eclipse.milo.opcua.stack.core.types.structured.SamplingIntervalDiagnosticsDataType;
  
  public interface SamplingIntervalDiagnosticsArrayType extends BaseDataVariableType {
      /**
       * Get the local value of the SamplingIntervalDiagnostics Node.
       * <p>
       * The returned value is the last seen; it is not read live from the server.
       *
       * @return the local value of the SamplingIntervalDiagnostics Node.
       * @throws UaException if an error occurs creating or getting the SamplingIntervalDiagnostics Node.
       */
      SamplingIntervalDiagnosticsDataType getSamplingIntervalDiagnostics() throws UaException;
  
      /**
       * Set the local value of the SamplingIntervalDiagnostics Node.
       * <p>
       * The value is only updated locally; it is not written to the server.
       *
       * @param samplingIntervalDiagnostics the local value to set for the SamplingIntervalDiagnostics Node.
       * @throws UaException if an error occurs creating or getting the SamplingIntervalDiagnostics Node.
       */
      void setSamplingIntervalDiagnostics(
          SamplingIntervalDiagnosticsDataType samplingIntervalDiagnostics) throws UaException;
  
      /**
       * Read the value of the SamplingIntervalDiagnostics Node from the server and update the local value if the
       * operation succeeds.
       *
       * @return the {@link SamplingIntervalDiagnosticsDataType} value read from the server.
       * @throws UaException if a service- or operation-level error occurs.
       */
      SamplingIntervalDiagnosticsDataType readSamplingIntervalDiagnostics() throws UaException;
  
      /**
       * Write a new value for the SamplingIntervalDiagnostics Node to the server and update the local value if
       * the operation succeeds.
       *
       * @param samplingIntervalDiagnostics the {@link SamplingIntervalDiagnosticsDataType} value to write to the server.
       * @throws UaException if a service- or operation-level error occurs.
       */
      void writeSamplingIntervalDiagnostics(
          SamplingIntervalDiagnosticsDataType samplingIntervalDiagnostics) throws UaException;
  
      /**
       * An asynchronous implementation of {@link #readSamplingIntervalDiagnostics()}.
       *
       * @return a CompletableFuture that completes successfully with the property value or completes
       * exceptionally if an operation- or service-level error occurs.
       */
      CompletableFuture<? extends SamplingIntervalDiagnosticsDataType> readSamplingIntervalDiagnosticsAsync(
      );
  
      /**
       * An asynchronous implementation of {@link #writeSamplingIntervalDiagnostics(SamplingIntervalDiagnosticsDataType)}.
       *
       * @return a CompletableFuture that completes successfully with the operation result or
       * completes exceptionally if a service-level error occurs.
       */
      CompletableFuture<StatusCode> writeSamplingIntervalDiagnosticsAsync(
          SamplingIntervalDiagnosticsDataType samplingIntervalDiagnostics);
  
      /**
       * Get the SamplingIntervalDiagnostics {@link SamplingIntervalDiagnosticsType} Node, or {@code null} if it does not exist.
       * <p>
       * The Node is created when first accessed and cached for subsequent calls.
       *
       * @return the SamplingIntervalDiagnostics {@link SamplingIntervalDiagnosticsType} Node, or {@code null} if it does not exist.
       * @throws UaException if an error occurs creating or getting the Node.
       */
      SamplingIntervalDiagnosticsType getSamplingIntervalDiagnosticsNode() throws UaException;
  
      /**
       * Asynchronous implementation of {@link #getSamplingIntervalDiagnosticsNode()}.
       *
       * @return a CompletableFuture that completes successfully with the
       * ? extends SamplingIntervalDiagnosticsType Node or completes exceptionally if an error occurs
       * creating or getting the Node.
       */
      CompletableFuture<? extends SamplingIntervalDiagnosticsType> getSamplingIntervalDiagnosticsNodeAsync(
      );
  }
  