has and get methods to access the information.
has methods can be used to check if the data exists, i.e., if the data was available (successfully downloaded) and was parsed correctly.
get methods can be used to access the data, if the data exists, otherwise get methods will give value as per following basis:
Boolean: false
Integral: Minimum value (MIN_VALUE)
Floating point: Not a number (NaN)
Others: null
@author Ashutosh Kumar Singh @version 2013/08/07 @since 2.5.0.1
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