Review existing samples in the repository (e.g., https://github.com/vmware/pyvmomi community samples) to understand the structure and style. Look up pyVmomi documentation for VMDK related operations (e.g., `VirtualDiskManager`). The task is to create a new sample script demonstrating how to resize a VMDK, similar to other disk operation samples.
Sample: resize a VMDK · vmware/pyvmomi-community-samples#16 | Good First Issue