**FastAPI** provides a convenience tool to structure your application while keeping all the flexibility.

/// info

If you come from Flask, this would be the equivalent of Flask's Blueprints.

///

## An example file structure { #an-example-file-structure }

Let's say you have a file structure like this:

```
.
├── app
│   ├── __init__.py
│   ├── main.py

    protected int writeBytesWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    /**
     * {@inheritDoc}
     *
     * @throws SMBProtocolDecodingException if the response structure is invalid
     *
     * @see jcifs.internal.smb2.ServerMessageBlock2#readBytesWireFormat(byte[], int)
     */
    @Override

        byte[] buffer = new byte[1024];
        request.writeBytesWireFormat(buffer, Smb2Constants.SMB2_HEADER_LENGTH);

        // FileId is at offset 8 in the request structure
        for (int i = 0; i < 16; i++) {
            assertEquals(fileId[i], buffer[Smb2Constants.SMB2_HEADER_LENGTH + 8 + i]);
        }
    }

    @Test
    @DisplayName("Test setFileInformationClass method")

import jcifs.internal.AllocInfo;
import jcifs.internal.SMBProtocolDecodingException;
import jcifs.internal.util.SMBUtil;

/**
 * Represents the FILE_FS_FULL_SIZE_INFORMATION structure used to query comprehensive file system size information.
 * This structure provides complete allocation details including total allocation units, caller-available free units,
 * actual free allocation units, sectors per allocation unit, and bytes per sector.
 */

 */
package jcifs.internal.smb2.ioctl;

import jcifs.Decodable;
import jcifs.internal.SMBProtocolDecodingException;
import jcifs.internal.util.SMBUtil;

/**
 * SMB2 SRV_REQUEST_RESUME_KEY response data structure. This structure contains a resume key
 * that can be used for server-side copy operations.
 *
 * @author mbechler
 *
 */
public class SrvRequestResumeKeyResponse implements Decodable {

    /**

        @Test
        @DisplayName("Should decode error response with correct structure size")
        void testReadErrorResponseValid() throws SMBProtocolDecodingException {
            byte[] buffer = new byte[256];
            int bufferIndex = 0;

            // Write error response structure
            SMBUtil.writeInt2(9, buffer, bufferIndex); // structure size
            buffer[bufferIndex + 2] = 2; // error context count

 */
package jcifs.internal.smb2.ioctl;

import jcifs.Encodable;
import jcifs.internal.util.SMBUtil;

/**
 * SMB2 SRV_COPYCHUNK data structure. This structure represents a single chunk specification
 * for server-side copy operations.
 *
 * @author mbechler
 *
 */
public class SrvCopychunk implements Encodable {

    private final long sourceOffset;

 */
package jcifs.internal.smb2.ioctl;

import jcifs.Encodable;
import jcifs.internal.util.SMBUtil;

/**
 * SMB2 SRV_COPYCHUNK_COPY data structure. This structure is used to perform server-side
 * copy operations with multiple chunk specifications.
 *
 * @author mbechler
 *
 */
public class SrvCopychunkCopy implements Encodable {

 */
package jcifs.internal.fscc;

import jcifs.internal.SMBProtocolDecodingException;
import jcifs.internal.util.SMBUtil;

/**
 * Represents the FILE_STANDARD_INFORMATION structure used in SMB2/3 file system control code (FSCC) operations.
 * This structure provides standard file information including allocation size, end-of-file position,
 * number of links, deletion status, and directory flag.
 */

            byte[] buffer = new byte[256];

            // Execute
            int bytesWritten = request.writeBytesWireFormat(buffer, 0);

            // Verify structure
            assertEquals(49, SMBUtil.readInt2(buffer, 0)); // Structure size
            assertEquals(2, buffer[2]); // Padding
            assertEquals(0x01, buffer[3]); // Read flags
            assertEquals(4096, SMBUtil.readInt4(buffer, 4)); // Read length