WithStyles无法在Material UI中用于React

我有一个使用Material UI Beta的应用程序，在其中尝试按如下方式设置简单组件的样式：

import { MuiThemeProvider } from 'material-ui/styles';


const styles = theme => ({
  container: {
    display: 'flex',
    flexWrap: 'wrap',
  },
  textField: {
    marginLeft: 200,
    marginRight: theme.spacing.unit,
    width: 200,
  },
  menu: {
    width: 200,
  },
});



export const CreateJob = (props) => {
  const { classes } = props;
  let confirmDelete = () => {
    const r = window.confirm("Confirm deletion of job");
    return r === true;
  };

  return (
    <MuiThemeProvider>
      <div>
        <form onSubmit={props.isEditting ? props.handleEdit : props.handleSubmit}  noValidate autoComplete="off">
          <h2>Update job details</h2>
          <TextField
            error={props.jobIdError !== ''}
            helperText={props.jobIdError || "Example: ES10"}
            autoFocus
            margin="dense"
            id="jobId"
            label="Job ID"
            name="jobid"
            fullWidth
            onChange={props.handleInputChange('jobId')}
            value={props.jobId} />
         </form>
       </div>
     </MultiThemeProvider>

然后，在父组件中按如下方式使用它：

<CreateJob open={this.state.open} />

但是，这会产生以下错误：

TypeError：无法读取未定义的属性“类”