Increment Next Identity Operation

# Create a document with an identity ID:
# ======================================

with store.open_session() as session:
    # Pass a collection name that ends with a pipe '|' to create an identity ID
    session.store(Company(name="RavenDB"), "companies|")
    session.save_changes()
    # => Document "companies/1" will be created

# Increment the identity value on the server:
# ===========================================

# Define the next identity operation
# Pass the collection name (can be with or without a pipe)
next_identity_op = NextIdentityForOperation("companies|")

#  Execute the operation by passing it to Maintenance.Send
#  The latest value will be incremented to "2"
#  and the next document created with an identity will be assigned "3"
incremented_value = store.maintenance.send(next_identity_op)

# Create another document with an identity ID:
# ============================================

with store.open_session() as session:
    session.store(Company(name="RavenDB"), "companies|")
    session.save_changes()
    # => Document "companies/3" will be created

class NextIdentityForOperation(MaintenanceOperation[int]): ...