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I did like this.... is there any possibility to keep this xml data some where or I can read it?

You'd create `/cypress/fixtures/file.xml` and put it there. Then you read it via `cy.fixture('file')` and then do a string replacement to populate the values you want.

okay i have moved the code in xml, and read it . now 
how to do string replacement to populate value , i didn't got you

static buildImportPACS008File = (
    fileRef: number,
    timestamp: string,
    bankingDate: string,
    TxId: string,
    iban: string): Cypress.Chainable<any> => {
    return cy.fixture('importPacs008File.xml')
  }

That's a static method in your code, not your test file, right?

Yeah this is static method.. I will call this in my test file, 
or may be i think i can do directly in test file

So you wouldn't do it that way.  You'd call the `cy.fixture('file.xml').then(contents => contents.replace("FILE_REF", fileRef)`