return fmt.Errorf("database unspecified")
		}
	}

	if m.QueueDir != "" {
		if !filepath.IsAbs(m.QueueDir) {
			return errors.New("queueDir path should be absolute")
		}
	}

	if m.MaxOpenConnections < 0 {
		return errors.New("maxOpenConnections cannot be less than zero")
	}

	return nil
}

// MySQLTarget - MySQL target.
type MySQLTarget struct {
	initOnce once.Init

            } else if (!(USER_LEVEL.equals(sourceLevel) || GLOBAL_LEVEL.equals(sourceLevel))) {
                throw new IllegalArgumentException("sourceLevel must be one of: {" + USER_LEVEL + "," + GLOBAL_LEVEL + "}");
            } else {
                this.sourceLevel = sourceLevel;
                this.sourceLevelSet = true;
            }
        }

        checkLinksInUserManualAreNotMissing(layout, tasks, extension);
    }

    public static List<String> getDefaultExcludedPackages() {
        // TODO: This should be configured via the extension vs hardcoded in the plugin
        List<String> excludedPackages = new ArrayList<>();
        // These are part of the API, but not the DSL
        excludedPackages.add("org.gradle.tooling.**");

  /**
   * Creates a new key that is not expected to be found in {@link #makePopulatedMap()}.
   *
   * @return a key.
   * @throws UnsupportedOperationException if it's not possible to make a key that will not be found
   *     in the map.
   */
  protected abstract K getKeyNotInPopulatedMap() throws UnsupportedOperationException;

  /**
   * Creates a new value that is not expected to be found in {@link #makePopulatedMap()}.
   *

 * {@link #computeNext} method, and invoke the {@link #endOfData} method when appropriate.
 *
 * <p>Another example is an iterator that skips over null elements in a backing iterator. This could
 * be implemented as:
 *
 * {@snippet :
 * public static Iterator<String> skipNulls(final Iterator<String> in) {
 *   return new AbstractIterator<String>() {
 *     protected String computeNext() {
 *       while (in.hasNext()) {

except (ImportError, AttributeError):
  pass

del importlib

# Delete modules that should be hidden from dir().
# Don't fail if these modules are not available.
# For e.g. this file will be originally placed under tensorflow/_api/v1 which
# does not have "python", "core" directories. Then, it will be copied
# to tensorflow/ which does have these two directories.
try:
  del python
except NameError:
  pass

 * limitations under the License.
 */

package com.google.common.graph;

import java.util.Set;

/**
 * A class to allow {@link Graph} implementations to be backed by a {@link BaseGraph}. This is not
 * currently planned to be released as a general-purpose forwarding class.
 *
 * @author James Sexton
 */
abstract class ForwardingGraph<N> extends AbstractGraph<N> {

  abstract BaseGraph<N> delegate();

    /**
     * Returns the value of the {@link Field}.
     *
     * @param <T>
     *            the type of the field
     * @param target
     *            the target object. Must not be {@literal null}
     * @return the value of the {@link Field}
     */
    <T> T getFieldValue(Object target);

    /**
     * Returns the value of the static {@link Field}.
     *
     * @param <T>

    /**
     * Constructs an instance.
     *
     * @param beanDesc
     *            The {@link BeanDesc} of the class that owns this field. Must not be {@literal null}.
     * @param field
     *            The field. Must not be {@literal null}.
     */
    public FieldDescImpl(final BeanDesc beanDesc, final Field field) {
        assertArgumentNotNull("beanDesc", beanDesc);

 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *