是的，Autodesk Forge支持IFC 4。您可以使用Forge的Model Derivative API将IFC 4文件转换为其他格式，如SVF、OBJ、STEP等。以下是一个使用Python的示例代码：

import requests

# 获取访问令牌
def get_access_token(client_id, client_secret):
    url = 'https://developer.api.autodesk.com/authentication/v1/authenticate'

    payload = {
        'client_id': client_id,
        'client_secret': client_secret,
        'grant_type': 'client_credentials',
        'scope': 'data:write data:read bucket:read bucket:create'
    }

    response = requests.post(url, data=payload)
    access_token = response.json()['access_token']
    return access_token

# 将IFC 4文件转换为SVF格式
def convert_ifc_to_svf(access_token, ifc_file_path, svf_file_path):
    url = 'https://developer.api.autodesk.com/modelderivative/v2/designdata/job'

    headers = {
        'Authorization': 'Bearer ' + access_token,
        'Content-Type': 'application/json'
    }

    payload = {
        'input': {
            'urn': 'urn:adsk.objects:os.object:your-bucket-name/' + ifc_file_path
        },
        'output': {
            'formats': [
                {
                    'type': 'svf',
                    'views': ['2d', '3d']
                }
            ]
        }
    }

    response = requests.post(url, headers=headers, json=payload)
    response_json = response.json()

    if response.status_code == 200 and response_json['result'] == 'success':
        # 等待转换完成
        while True:
            url = 'https://developer.api.autodesk.com/modelderivative/v2/designdata/' + response_json['urn'] + '/manifest'
            response = requests.get(url, headers=headers)
            response_json = response.json()

            status = response_json['status']
            if status == 'success':
                break
            elif status == 'failed':
                print('转换失败')
                return

        # 下载转换后的SVF文件
        svf_url = response_json['derivatives'][0]['children'][0]['urn']
        response = requests.get(svf_url, headers=headers)
        with open(svf_file_path, 'wb') as f:
            f.write(response.content)

        print('转换完成')
    else:
        print('转换失败')

# 使用示例
client_id = 'your-client-id'
client_secret = 'your-client-secret'
access_token = get_access_token(client_id, client_secret)
convert_ifc_to_svf(access_token, 'your-ifc-file.ifc', 'your-svf-file.svf')

请确保替换示例代码中的your-client-id、your-client-secret、your-bucket-name、your-ifc-file.ifc和your-svf-file.svf为实际值。此外，您还需要安装requests库（pip install requests）才能运行代码。