public void setFieldName ( final String name ) { if ( ! isInStruct ( ) ) { throw new IllegalStateException ( "IonWriter.setFieldName() must be called before writing a value into a struct." ) ; } if ( name == null ) { throw new NullPointerException ( "Null field name is not allowed." ) ; } final SymbolToken token = intern ( name ) ; user . setFieldNameSymbol ( token ) ; }
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