If you have quite some technical knowledge (coroutines, threads, blocking, etc.) and are curious about how FastAPI handles `async def` vs normal `def`, go ahead.

///

### Path operation functions { #path-operation-functions }

When you declare a *path operation function* with normal `def` instead of `async def`, it is run in an external threadpool that is then awaited, instead of being called directly (as it would block the server).

     * @throws SmbException if an error occurs while resolving the DFS path
     */
    public String getDfsPath() throws SmbException {
        try {
            String path = this.treeConnection.ensureDFSResolved(this.fileLocator).getDfsPath();
            if (path != null && isDirectory()) {
                path += '/';
            }
            return path;
        } catch (final CIFSException e) {

		switch {
		case path[r] > 127:
			// Non ascii.
			return true
		case path[r] == '/':
			// multiple / elements
			return true
		case path[r] == '.' && (r+1 == n || path[r+1] == '/'):
			// . element - assume it has to be cleaned.
			return true
		case path[r] == '.' && path[r+1] == '.' && (r+2 == n || path[r+2] == '/'):
			// .. element: remove to last / - assume it has to be cleaned.
			return true
		default:

import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.Mockito.when;

import java.io.IOException;
import java.math.BigInteger;
import java.security.GeneralSecurityException;

import javax.security.auth.kerberos.KerberosKey;

import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Integer;

	path, err := job.getJobReportPath()
	if err != nil {
		batchLogIf(ctx, err)
		return err
	}
	return ri.loadByPath(ctx, api, path)
}

func (ri *batchJobInfo) loadByPath(ctx context.Context, api ObjectLayer, path string) error {
	var format, version uint16
	switch filepath.Base(path) {
	case batchReplName:
		version = batchReplVersionV1

                if (netbiosName != null && tcax.path.endsWith("\\IPC$")) {
                    /* Some pipes may require that the hostname in the tree connect
                     * be the netbios name. So if we have the netbios server name
                     * from the NTLMSSP type 2 message, and the share is IPC$, we
                     * assert that the tree connect path uses the netbios hostname.
                     */

                        false), SESSION_EXPIRED("Session expired", ErrorCategory.AUTHENTICATION, true),

        // File system errors
        FILE_NOT_FOUND("File not found", ErrorCategory.FILE_SYSTEM, false), PATH_NOT_FOUND("Path not found", ErrorCategory.FILE_SYSTEM,
                false), FILE_EXISTS("File already exists", ErrorCategory.FILE_SYSTEM, false), DIRECTORY_NOT_EMPTY("Directory not empty",

    /** The path of the HTML: /error/notFound.jsp */
    HtmlNext path_Error_NotFoundJsp = new HtmlNext("/error/notFound.jsp");

    /** The path of the HTML: /error/redirect.jsp */
    HtmlNext path_Error_RedirectJsp = new HtmlNext("/error/redirect.jsp");

    /** The path of the HTML: /error/system.jsp */
    HtmlNext path_Error_SystemJsp = new HtmlNext("/error/system.jsp");

    /** The path of the HTML: /footer.jsp */

    *   New endpoints in tf.math namespace: `tf.math.acos`, `tf.math.acosh`,
        `tf.math.add`, `tf.math.asin`, `tf.math.asinh`, `tf.math.atan`,
        `tf.math.atan2`, `tf.math.atanh`, `tf.math.betainc`, `tf.math.ceil`,
        `tf.math.cos`, `tf.math.cosh`, `tf.math.digamma`, `tf.math.equal`,
        `tf.math.erfc`, `tf.math.exp`, `tf.math.expm1`, `tf.math.floor`,
        `tf.math.greater`, `tf.math.greater_equal`, `tf.math.igamma`,

    class XmlReaderRequestBuilder {
        Path path;
        Path rootDirectory;
        URL url;
        InputStream inputStream;
        Reader reader;
        Transformer transformer;
        boolean strict;
        String modelId;
        String location;
        boolean addDefaultEntities = true;

        public XmlReaderRequestBuilder path(Path path) {
            this.path = path;
            return this;
        }