How to use the oas-kit-common.hash function in oas-kit-common

}
                    else {
                        throwError('(Patchable) "Status Code" is not a valid header', options);
                    }
                }
                else {
                    processHeader(response.headers[h], options);
                }
            }
        }
    }

    for (let r in openapi.components.requestBodies) { // converted ones
        let rb = openapi.components.requestBodies[r];
        let rbStr = JSON.stringify(rb);
        let rbHash = common.hash(rbStr);
        let entry = {};
        entry.name = r;
        entry.body = rb;
        entry.refs = [];
        requestBodyCache[rbHash] = entry;
    }

    processPaths(openapi.paths, 'paths', options, requestBodyCache, openapi);
    if (openapi["x-ms-paths"]) {
        processPaths(openapi["x-ms-paths"], 'x-ms-paths', options, requestBodyCache, openapi);
    }

    if (!options.debug) {
        for (let p in openapi.components.parameters) {
            let param = openapi.components.parameters[p];
            if (param["x-s2o-delete"]) {

}
                                    }

                                }
                            }
                        }
                        delete op["x-ms-examples"];
                    }

                    if (op.parameters && op.parameters.length === 0) delete op.parameters;
                    if (op.requestBody) {
                        let effectiveOperationId = op.operationId ? common.sanitiseAll(op.operationId) : common.sanitiseAll(method + p).toCamelCase();
                        let rbName = common.sanitise(op.requestBody['x-s2o-name'] || effectiveOperationId || '');
                        delete op.requestBody['x-s2o-name'];
                        let rbStr = JSON.stringify(op.requestBody);
                        let rbHash = common.hash(rbStr);
                        if (!requestBodyCache[rbHash]) {
                            let entry = {};
                            entry.name = rbName;
                            entry.body = op.requestBody;
                            entry.refs = [];
                            requestBodyCache[rbHash] = entry;
                        }
                        let ptr = '#/'+containerName+'/'+encodeURIComponent(jptr.jpescape(p))+'/'+method+'/requestBody';
                        requestBodyCache[rbHash].refs.push(ptr);
                    }
                }

            }
        }
        if (path && path.parameters) {
            for (let p2 in path.parameters) {