Hi I am using a datepicker from Material-UI Datepickers. 
Using the Inline datepickers they provide I want to insert a calendar Icon into the input field. 

this is what the input element looks like. How can I add an I con to the input field here. So that it still shows inside the element and clicking it will activate the inputfield but will not disrupt the value of the input.

```
              <InlineDatePicker
                label={"Start Date"}
                value={startDate}
                format={"MMM Do YYYY"}
                onChange={(e) => {this.handleDateChange(e, 'start')}}
                className={styles.dateInput}
                minDate={this.getMinDate(true)}
                maxDate={this.getMaxDate(true)}
              />

```