Steps used for navigation on page:

`I visit the ":pageFileName" page`

Visits the url of the page object with :pageFileName name.

In order to make it work we create a page object file with a name of :pageFileName.

For example in case of: I visit the "myPage" page there should be a file myPage.js inside the pages directory.

If we have a page object with a name somePageObject.js defined inside pages directory then:

Given I visit the "somePageObject" page

will set this.currentPage variable to somePageObject page and we should end up on somePageObject url.

The same as I visit the ":pageFileName" page except allows to pass url parameters.

If url of myPage is defined as this.url = /orders/:orderId/products/:productId then we can use this step to visit this page by:

I visit the "myPage" page with parameters:
    | orderId   | 1 |
    | productId | 2 |

this will result in visiting the /orders/1/product/2 page.

Checks if current browser url matches url of pageFileName page object.

If the url matches expected pattern then this.currentPage variable is set to pageFileName page object.