public @NotNull FileAssert isFile() {
    """
	Verifies that the actual {@code File} is a regular file.
	
	@return this assertion object.
	@throws AssertionError if the the actual {@code File} is {@code null}.
	@throws AssertionError if the actual {@code File} is not a regular file.
    """
    isNotNull();
    if (actual.isFile()) {
      return this;
    }
    failIfCustomMessageIsSet();
    throw failure(format("file:<%s> should be a file", actual));
  }
public @NotNull FileAssert isFile() {
    isNotNull();
    if (actual.isFile()) {
      return this;
    }
    failIfCustomMessageIsSet();
    throw failure(format("file:<%s> should be a file", actual));
  }
public @ NotNull FileAssert isFile ( ) { isNotNull ( ) ; if ( actual . isFile ( ) ) { return this ; } failIfCustomMessageIsSet ( ) ; throw failure ( format ( "file:<%s> should be a file" , actual ) ) ; }
Verifies that the actual {@code File} is a regular file.

@return this assertion object.
@throws AssertionError if the the actual {@code File} is {@code null}.
@throws AssertionError if the actual {@code File} is not a regular file.
Verifies that the actual { @code File } is a regular file .