Purchase Approval Swimlane Diagram Template

flowchart TB
    subgraph Requesting department
        A[Raise purchase need] --> B[Fill in purchase request]
        H[Receive and inspect goods]
    end
    subgraph Procurement
        C[Collect quotes] --> D[Select supplier]
        G[Place order]
    end
    subgraph Finance
        E{Under 10,000?}
        I[Pay supplier]
    end
    subgraph General manager
        F[Approve]
    end
    B --> C
    D --> E
    E -- Yes --> G
    E -- No --> F
    F -- Approved --> G
    F -- Rejected --> A
    G --> H
    H --> I

Draw a purchase approval swimlane diagram in Mermaid flowchart syntax with subgraph lanes for Requesting department, Procurement, Finance and General manager. The requesting department raises the need and fills in a purchase request; procurement collects quotes and selects a supplier; purchases under 10,000 are approved by finance, larger ones by the general manager; procurement then places the order, the requesting department receives and inspects the goods, and finance pays. Output only the mermaid code block.