A credit contains data pertaining to how to display attributions/credits for certain content on the screen.
    
    
    
    
    
    
        
| Name | Type | Description | 
|---|---|---|
| text | String | optional The text to be displayed on the screen if no imageUrl is specified. | 
| imageUrl | String | optional The source location for an image | 
| link | String | optional A URL location for which the credit will be hyperlinked | 
Example:
//Create a credit with a tooltip, image and link
var credit = new Cesium.Credit('Cesium', '/images/cesium_logo.png', 'http://cesiumjs.org/');Members
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    The source location for the image.
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    A URL location for the credit hyperlink
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    The credit text
Methods
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    Returns true if the credits are equalName Type Description leftCredit The first credit rightCredit The second credit Returns:trueif left and right are equal,falseotherwise.
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    Returns true if the credits are equalName Type Description creditsCredit The credit to compare to. Returns:trueif left and right are equal,falseotherwise.
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    Returns true if the credit has an imageUrlReturns:
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    Returns true if the credit has a linkReturns:
