import numpy as np
import simsopt

# Define objective function
def objective_function(x):
    # Code for objective function here

# Initialize boundary magnetic surface
# Code for boundary magnetic surface initialization here

# Create equally spaced curves and multifilament grid
# Code for creating curves and grid here

# Apply stellarator and rotation symmetries
# Code for applying symmetries here

# Define Biot-Savart law
# Code for Biot-Savart law here

# Perform Taylor test
# Code for Taylor test here

# Run optimization using L-BFGS-B method
result = simsopt.minimize(objective_function, x0, method='L-BFGS-B')

# Save output in VTK format
# Code for saving output in VTK format here