```groovy
public interface NewThing {
    Property<String> getSomeProperty()
}

// Unacceptable
String value
if (!getSomeProperty().isPresent()) {
   value = "convention"
} else {
   value = getSomeProperty().get()
}

// Also unacceptable
String value = getSomeProperty().getOrElse("convention")

// This should be always:
String value = getSomeProperty().get()
```

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

for doc in solr_data['response']['docs']:
    fess_doc = {
        "url": doc.get("id", ""),
        "title": doc.get("title", [""])[0] if isinstance(doc.get("title"), list) else doc.get("title", ""),
        "content": doc.get("content", [""])[0] if isinstance(doc.get("content"), list) else doc.get("content", ""),
        "mimetype": "text/html",
        "filetype": "html",
        # Map other fields
    }
    fess_docs.append(fess_doc)

          // same freshness, generate again.
          return invokeGeneratorMethod(emptyGenerate);
        } else {
          // Cannot use empty generator. Proceed with other generators.
        }
      } else {
        // never generated empty instance for this type before.
        Object emptyInstance = invokeGeneratorMethod(emptyGenerate);

            final String[] defaultSortValues = fessConfig.getDefaultSortValues(getUserBean());
            if (defaultSortValues.length == 1) {
                form.sort = defaultSortValues[0];
            } else if (defaultSortValues.length >= 2) {
                final StringBuilder sortValueSb = new StringBuilder();
                final Set<String> sortFieldNames = new HashSet<>();

# Handling Errors { #handling-errors }

There are many situations in which you need to notify an error to a client that is using your API.

This client could be a browser with a frontend, a code from someone else, an IoT device, etc.

You could need to tell the client that:

* The client doesn't have enough privileges for that operation.
* The client doesn't have access to that resource.
* The item the client was trying to access doesn't exist.
* etc.

    CacheTesting.checkValidState(cache);
  }

  /**
   * Tests that when a single entry exceeds the segment's max weight, the new entry is immediately
   * evicted and nothing else.
   */
  public void testEviction_maxWeight_entryTooBig() {
    CountingRemovalListener<Integer, Integer> removalListener = countingRemovalListener();
    IdentityLoader<Integer> loader = identityLoader();

		return payload, 0, 0, fmt.Errorf("xlMeta: unknown XLv2 header, expected %v, got %v", xlHeader[:4], buf[:4])
	}

	if bytes.Equal(buf[4:8], []byte("1   ")) {
		// Set as 1,0.
		major, minor = 1, 0
	} else {
		major, minor = binary.LittleEndian.Uint16(buf[4:6]), binary.LittleEndian.Uint16(buf[6:8])
	}
	if major > xlVersionMajor {
		return buf[8:], major, minor, fmt.Errorf("xlMeta: unknown major version %d found", major)
	}

                        : targetName.toUpperCase().getBytes(getOEMEncoding());
                size += targetBytes.length;
            } else {
                flags &= 0xffffffff ^ NTLMSSP_REQUEST_TARGET;
            }
        }

        if (targetInformationBytes != null) {
            size += targetInformationBytes.length;

                            new Smb2QueryDirectoryResponse(config, Smb2QueryDirectoryRequest.FILE_BOTH_DIRECTORY_INFO);
                    setResults(qr, new FileEntry[] { fe3 });
                    return qr;
                } else {
                    // Third query: no more files
                    throw new SmbException(NtStatus.NT_STATUS_NO_MORE_FILES, false);
                }
            }
            return null;