AbstractFuture<Object> testFuture3 = new AbstractFuture<Object>() {};
    testFuture3.setFuture(testFuture2);
    assertThat(testFuture3.toString())
        .matches(
            "[^\\[]+\\[status=PENDING, setFuture=\\[[^\\[]+\\[status=PENDING,"
                + " info=\\[cause=\\[Someday...]]]]]");
    testFuture2.set("result string");
    assertThat(testFuture3.toString())

  /**
   * This method is called by {@link #stopAsync} when the service is still starting (i.e. {@link
   * #startAsync} has been called but {@link #notifyStarted} has not). Subclasses can override the
   * method to cancel pending work and then call {@link #notifyStopped} to stop the service.
   *
   * <p>This method should return promptly; prefer to do work on a different thread where it is

public abstract class SystemUtil {

    /**
     * Do not instantiate.
     */
    protected SystemUtil() {
    }

    /**
     * <code>file.encoding</code> system property. Example: UTF-8
     */
    public static final String FILE_ENCODING = System.getProperty("file.encoding");

    /**
     * <code>line.separator</code> system property. For example, on Mac OS X: <code>"\n"</code>
     */

        }
        return childUrlSet;
    }

    /**
     * Retrieves child URLs for a given document ID from the search engine index.
     * This method queries the search engine for child documents and extracts their URLs.
     *
     * @param searchEngineClient the search engine client to query
     * @param id the parent document ID to find children for

import org.junit.jupiter.params.provider.ValueSource;
import org.mockito.junit.jupiter.MockitoExtension;

/**
 * Unit tests for {@link NdrShort}.  The tests cover construction,
 * encoding and decoding logic, masking behaviour, alignment handling and
 * interaction with {@link NdrBuffer}.  All public behaviour is exercised.
 */
@ExtendWith(MockitoExtension.class)
class NdrShortTest {

    /**

totype={constructor:at,init:function(e,t,n,r,i,o){this.elem=e,this.prop=n,this.easing=i||ce.easing._default,this.options=t,this.start=this.now=this.cur(),this.end=r,this.unit=o||(ce.cssNumber[n]?"":"px")},cur:function(){var e=at.propHooks[this.prop];return e&&e.get?e.get(this):at.propHooks._default.get(this)},run:function(e){var t,n=at.propHooks[this.prop];return this.options.duration?this.pos=t=ce.easing[this.easing](e,this.options.duration*e,0,1,this.options.duration):this.pos=t=e,this.now=(th...

### Crear un Engine

Un `engine` de SQLModel (en el fondo, realmente es un `engine` de SQLAlchemy) es lo que **mantiene las conexiones** a la base de datos.

Tendrías **un solo objeto `engine`** para todo tu código para conectar a la misma base de datos.

    /**
     * Authentication in progress
     */
    AUTHENTICATING(2),

    /**
     * Channel is established and ready for use
     */
    ESTABLISHED(3),

    /**
     * Channel binding in progress
     */
    BINDING(4),

    /**
     * Channel is actively transferring data
     */
    ACTIVE(5),

    /**
     * Channel connection has failed
     */
    FAILED(6),

    /**

    /* open flags */

    /**
     * Open for reading only.
     */
    int O_RDONLY = 0x01;
    /**
     * Open for writing only.
     */
    int O_WRONLY = 0x02;
    /**
     * Open for reading and writing.
     */
    int O_RDWR = 0x03;
    /**
     * Open in append mode.
     */
    int O_APPEND = 0x04;

    // Open Function Encoding
    /**
     * Create file if it does not exist.

    UrlComponentEncodingTester
      .newInstance()
      .nonPrintableAscii(Encoding.FORBIDDEN)
      .nonAscii(Encoding.PUNYCODE)
      .override(
        Encoding.FORBIDDEN,
        '\t'.code,
        '\n'.code,
        '\u000c'.code,
        '\r'.code,
        ' '.code,
      ).override(
        Encoding.FORBIDDEN,
        '#'.code,
        '%'.code,
        '/'.code,
        ':'.code,