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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def fix_normals(mesh, multibody=False):
 """ Fix the winding and direction of a mesh face and face normals in-place. Really only meaningful on watertight meshes, but will orient all faces and winding in a uniform way for non-watertight face patches as well. Parameters mesh: Trimesh object multibody: bool, if True try to correct normals direction on every body. Alters mesh.faces: will flip columns on inverted faces """

    # traverse face adjacency to correct winding
    fix_winding(mesh)
    # check to see if a mesh is inverted
    fix_inversion(mesh, multibody=multibody)